Left Atrial Appendage 3D Modeling for Device Sizing
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Solution Overview
Problem
Current methods for planning the isolation or occlusion of the left atrial appendage (LAA) lack an effective roadmap for determining anatomy and selecting appropriate occlusion devices, leading to issues with incorrectly sized implants and inefficiencies in minimally invasive procedures.
Innovation Solution
A method and system utilizing non-invasive medical imaging to generate 3D models of the left atrium, identifying anatomical landmarks, and registering saved views for visualization on interventional systems, enabling precise selection of appropriate occlusion devices based on detailed anatomical information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If minimally invasive techniques with catheters are used for LAA occlusion, then patient recovery is improved and surgical trauma is reduced, but procedure time increases and device size selection accuracy deteriorates
Solution Approach 1:
The system performs preliminary 3D modeling and anatomical analysis of the LAA using non-invasive imaging before the actual occlusion procedure. This pre-planning phase allows the interventionalist to review detailed anatomical data, measure LAA dimensions, and select the appropriate device size in advance, eliminating the need for intra-procedural device exchanges and reducing overall procedure time while maintaining minimal invasiveness
2Reliability
If catheter-based occlusion devices are used, then stroke prevention is achieved, but device size accuracy deteriorates leading to replacements
Solution Approach 1:
The system creates a digital 3D copy or virtual model of the patient's LAA anatomy from non-invasive imaging data. This virtual replica allows precise measurement and visualization of LAA dimensions, shape, and orientation, enabling accurate device size selection before the procedure. The digital model serves as a roadmap that guides device selection and placement, ensuring the correct device size is chosen the first time, thereby improving reliability while eliminating the need for size adjustments
3Object-affected harmful factors
If non-invasive imaging is used for anatomical planning, then patient safety is improved, but anatomical detail visualization deteriorates
Solution Approach 1:
The system segments the LAA anatomy into distinct 3D components including the ostium, body, and tip, and further divides the visualization into multiple saved views from different angles and planes. This segmentation allows the system to process and display complex anatomical structures in manageable, detailed sections. The interventionalist can review specific anatomical regions in high detail through these segmented views, maintaining patient safety through non-invasive imaging while preserving complete anatomical information through comprehensive 3D segmentation and multi-view visualization
Data Source
AI summary
A method for planning left atrial appendage (LAA) occlusion for a patient includes obtaining acquisition data from a medical imaging system, and generating a 3D model of the left atrium of the patient. One or more left atrial anatomical landmarks are identified on the 3D model, and saved views of the 3D model are registered on an interventional system. One or more of the registered saved views are visualized with the interventional system.